Renewal method for elevator hoisting machine

摘要

To provide a method of renewing an elevator hoisting machine capable of shortening the construction period of renewal work and reducing renewal cost.A method of renewing an elevator hoisting machine according to an embodiment includes a step of detaching an existing main rope 4 and a step of removing an existing hoisting machine 20 having an existing traction sheave 22 without removing the existing hoisting machine 20 And removing the rope winding function. The method of renewing the elevator hoisting machine includes a step of installing a new hoisting machine 40 having a newly constructed traction sheave 42 and a step of winding the newly installed main rope 7 on the existing traction sheave 22 and the newly constructed traction sheave 42 . After the step of winding the newly installed main rope 7, the existing traction sheave 22 is used as a deflecting sheave.(FIG.